Lines Matching +full:up +full:-
1 // SPDX-License-Identifier: GPL-2.0+
3 * Driver for OMAP-UART controller.
16 * this driver as required for the omap-platform.
38 #include <linux/platform_data/serial-omap.h>
79 #define OMAP_UART_DMA_CH_FREE -1
172 static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1);
174 static inline unsigned int serial_in(struct uart_omap_port *up, int offset) in serial_in() argument
176 offset <<= up->port.regshift; in serial_in()
177 return readw(up->port.membase + offset); in serial_in()
180 static inline void serial_out(struct uart_omap_port *up, int offset, int value) in serial_out() argument
182 offset <<= up->port.regshift; in serial_out()
183 writew(value, up->port.membase + offset); in serial_out()
186 static inline void serial_omap_clear_fifos(struct uart_omap_port *up) in serial_omap_clear_fifos() argument
188 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); in serial_omap_clear_fifos()
189 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | in serial_omap_clear_fifos()
191 serial_out(up, UART_FCR, 0); in serial_omap_clear_fifos()
195 static int serial_omap_get_context_loss_count(struct uart_omap_port *up) in serial_omap_get_context_loss_count() argument
197 struct omap_uart_port_info *pdata = dev_get_platdata(up->dev); in serial_omap_get_context_loss_count()
199 if (!pdata || !pdata->get_context_loss_count) in serial_omap_get_context_loss_count()
200 return -EINVAL; in serial_omap_get_context_loss_count()
202 return pdata->get_context_loss_count(up->dev); in serial_omap_get_context_loss_count()
206 static void serial_omap_enable_wakeup(struct uart_omap_port *up, bool enable) in serial_omap_enable_wakeup() argument
208 struct omap_uart_port_info *pdata = dev_get_platdata(up->dev); in serial_omap_enable_wakeup()
210 if (!pdata || !pdata->enable_wakeup) in serial_omap_enable_wakeup()
213 pdata->enable_wakeup(up->dev, enable); in serial_omap_enable_wakeup()
224 unsigned int n = port->uartclk / (mode * baud); in calculate_baud_abs_diff()
230 abs_diff = baud - (port->uartclk / (mode * n)); in calculate_baud_abs_diff()
232 abs_diff = -abs_diff; in calculate_baud_abs_diff()
238 * serial_omap_baud_is_mode16 - check if baud rate is MODE16X
258 * serial_omap_get_divisor - calculate divisor value
271 return port->uartclk/(mode * baud); in serial_omap_get_divisor()
276 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_enable_ms() local
278 dev_dbg(up->port.dev, "serial_omap_enable_ms+%d\n", up->port.line); in serial_omap_enable_ms()
280 up->ier |= UART_IER_MSI; in serial_omap_enable_ms()
281 serial_out(up, UART_IER, up->ier); in serial_omap_enable_ms()
286 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_stop_tx() local
289 /* Handle RS-485 */ in serial_omap_stop_tx()
290 if (port->rs485.flags & SER_RS485_ENABLED) { in serial_omap_stop_tx()
291 if (up->scr & OMAP_UART_SCR_TX_EMPTY) { in serial_omap_stop_tx()
296 * disable THR interrupts and toggle the RS-485 GPIO in serial_omap_stop_tx()
299 up->scr &= ~OMAP_UART_SCR_TX_EMPTY; in serial_omap_stop_tx()
300 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_stop_tx()
301 res = (port->rs485.flags & SER_RS485_RTS_AFTER_SEND) ? in serial_omap_stop_tx()
303 if (gpiod_get_value(up->rts_gpiod) != res) { in serial_omap_stop_tx()
304 if (port->rs485.delay_rts_after_send > 0) in serial_omap_stop_tx()
306 port->rs485.delay_rts_after_send); in serial_omap_stop_tx()
307 gpiod_set_value(up->rts_gpiod, res); in serial_omap_stop_tx()
318 up->scr |= OMAP_UART_SCR_TX_EMPTY; in serial_omap_stop_tx()
319 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_stop_tx()
324 if (up->ier & UART_IER_THRI) { in serial_omap_stop_tx()
325 up->ier &= ~UART_IER_THRI; in serial_omap_stop_tx()
326 serial_out(up, UART_IER, up->ier); in serial_omap_stop_tx()
332 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_stop_rx() local
334 up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); in serial_omap_stop_rx()
335 up->port.read_status_mask &= ~UART_LSR_DR; in serial_omap_stop_rx()
336 serial_out(up, UART_IER, up->ier); in serial_omap_stop_rx()
339 static void serial_omap_put_char(struct uart_omap_port *up, unsigned char ch) in serial_omap_put_char() argument
341 serial_out(up, UART_TX, ch); in serial_omap_put_char()
343 if ((up->port.rs485.flags & SER_RS485_ENABLED) && in serial_omap_put_char()
344 !(up->port.rs485.flags & SER_RS485_RX_DURING_TX)) in serial_omap_put_char()
345 up->rs485_tx_filter_count++; in serial_omap_put_char()
348 static void transmit_chars(struct uart_omap_port *up, unsigned int lsr) in transmit_chars() argument
350 struct circ_buf *xmit = &up->port.state->xmit; in transmit_chars()
353 if (up->port.x_char) { in transmit_chars()
354 serial_omap_put_char(up, up->port.x_char); in transmit_chars()
355 up->port.icount.tx++; in transmit_chars()
356 up->port.x_char = 0; in transmit_chars()
359 if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) { in transmit_chars()
360 serial_omap_stop_tx(&up->port); in transmit_chars()
363 count = up->port.fifosize / 4; in transmit_chars()
365 serial_omap_put_char(up, xmit->buf[xmit->tail]); in transmit_chars()
366 xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); in transmit_chars()
367 up->port.icount.tx++; in transmit_chars()
371 } while (--count > 0); in transmit_chars()
374 uart_write_wakeup(&up->port); in transmit_chars()
377 serial_omap_stop_tx(&up->port); in transmit_chars()
380 static inline void serial_omap_enable_ier_thri(struct uart_omap_port *up) in serial_omap_enable_ier_thri() argument
382 if (!(up->ier & UART_IER_THRI)) { in serial_omap_enable_ier_thri()
383 up->ier |= UART_IER_THRI; in serial_omap_enable_ier_thri()
384 serial_out(up, UART_IER, up->ier); in serial_omap_enable_ier_thri()
390 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_start_tx() local
393 /* Handle RS-485 */ in serial_omap_start_tx()
394 if (port->rs485.flags & SER_RS485_ENABLED) { in serial_omap_start_tx()
396 up->scr &= ~OMAP_UART_SCR_TX_EMPTY; in serial_omap_start_tx()
397 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_start_tx()
400 res = (port->rs485.flags & SER_RS485_RTS_ON_SEND) ? 1 : 0; in serial_omap_start_tx()
401 if (gpiod_get_value(up->rts_gpiod) != res) { in serial_omap_start_tx()
402 gpiod_set_value(up->rts_gpiod, res); in serial_omap_start_tx()
403 if (port->rs485.delay_rts_before_send > 0) in serial_omap_start_tx()
404 mdelay(port->rs485.delay_rts_before_send); in serial_omap_start_tx()
408 if ((port->rs485.flags & SER_RS485_ENABLED) && in serial_omap_start_tx()
409 !(port->rs485.flags & SER_RS485_RX_DURING_TX)) in serial_omap_start_tx()
410 up->rs485_tx_filter_count = 0; in serial_omap_start_tx()
412 serial_omap_enable_ier_thri(up); in serial_omap_start_tx()
417 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_throttle() local
420 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_throttle()
421 up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); in serial_omap_throttle()
422 serial_out(up, UART_IER, up->ier); in serial_omap_throttle()
423 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_throttle()
428 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_unthrottle() local
431 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_unthrottle()
432 up->ier |= UART_IER_RLSI | UART_IER_RDI; in serial_omap_unthrottle()
433 serial_out(up, UART_IER, up->ier); in serial_omap_unthrottle()
434 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_unthrottle()
437 static unsigned int check_modem_status(struct uart_omap_port *up) in check_modem_status() argument
441 status = serial_in(up, UART_MSR); in check_modem_status()
442 status |= up->msr_saved_flags; in check_modem_status()
443 up->msr_saved_flags = 0; in check_modem_status()
447 if (status & UART_MSR_ANY_DELTA && up->ier & UART_IER_MSI && in check_modem_status()
448 up->port.state != NULL) { in check_modem_status()
450 up->port.icount.rng++; in check_modem_status()
452 up->port.icount.dsr++; in check_modem_status()
455 (&up->port, status & UART_MSR_DCD); in check_modem_status()
458 (&up->port, status & UART_MSR_CTS); in check_modem_status()
459 wake_up_interruptible(&up->port.state->port.delta_msr_wait); in check_modem_status()
465 static void serial_omap_rlsi(struct uart_omap_port *up, unsigned int lsr) in serial_omap_rlsi() argument
471 * to the table 23-246 of the omap4 TRM. in serial_omap_rlsi()
474 serial_in(up, UART_RX); in serial_omap_rlsi()
475 if ((up->port.rs485.flags & SER_RS485_ENABLED) && in serial_omap_rlsi()
476 !(up->port.rs485.flags & SER_RS485_RX_DURING_TX) && in serial_omap_rlsi()
477 up->rs485_tx_filter_count) in serial_omap_rlsi()
478 up->rs485_tx_filter_count--; in serial_omap_rlsi()
481 up->port.icount.rx++; in serial_omap_rlsi()
487 up->port.icount.brk++; in serial_omap_rlsi()
494 if (uart_handle_break(&up->port)) in serial_omap_rlsi()
501 up->port.icount.parity++; in serial_omap_rlsi()
506 up->port.icount.frame++; in serial_omap_rlsi()
510 up->port.icount.overrun++; in serial_omap_rlsi()
513 if (up->port.line == up->port.cons->index) { in serial_omap_rlsi()
515 lsr |= up->lsr_break_flag; in serial_omap_rlsi()
518 uart_insert_char(&up->port, lsr, UART_LSR_OE, 0, flag); in serial_omap_rlsi()
521 static void serial_omap_rdi(struct uart_omap_port *up, unsigned int lsr) in serial_omap_rdi() argument
529 ch = serial_in(up, UART_RX); in serial_omap_rdi()
530 if ((up->port.rs485.flags & SER_RS485_ENABLED) && in serial_omap_rdi()
531 !(up->port.rs485.flags & SER_RS485_RX_DURING_TX) && in serial_omap_rdi()
532 up->rs485_tx_filter_count) { in serial_omap_rdi()
533 up->rs485_tx_filter_count--; in serial_omap_rdi()
538 up->port.icount.rx++; in serial_omap_rdi()
540 if (uart_handle_sysrq_char(&up->port, ch)) in serial_omap_rdi()
543 uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag); in serial_omap_rdi()
547 * serial_omap_irq() - This handles the interrupt from one port
553 struct uart_omap_port *up = dev_id; in serial_omap_irq() local
559 spin_lock(&up->port.lock); in serial_omap_irq()
562 iir = serial_in(up, UART_IIR); in serial_omap_irq()
567 lsr = serial_in(up, UART_LSR); in serial_omap_irq()
574 check_modem_status(up); in serial_omap_irq()
577 transmit_chars(up, lsr); in serial_omap_irq()
581 serial_omap_rdi(up, lsr); in serial_omap_irq()
584 serial_omap_rlsi(up, lsr); in serial_omap_irq()
593 } while (max_count--); in serial_omap_irq()
595 spin_unlock(&up->port.lock); in serial_omap_irq()
597 tty_flip_buffer_push(&up->port.state->port); in serial_omap_irq()
599 up->port_activity = jiffies; in serial_omap_irq()
606 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_tx_empty() local
610 dev_dbg(up->port.dev, "serial_omap_tx_empty+%d\n", up->port.line); in serial_omap_tx_empty()
611 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_tx_empty()
612 ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0; in serial_omap_tx_empty()
613 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_tx_empty()
620 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_get_mctrl() local
624 status = check_modem_status(up); in serial_omap_get_mctrl()
626 dev_dbg(up->port.dev, "serial_omap_get_mctrl+%d\n", up->port.line); in serial_omap_get_mctrl()
641 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_set_mctrl() local
644 dev_dbg(up->port.dev, "serial_omap_set_mctrl+%d\n", up->port.line); in serial_omap_set_mctrl()
656 old_mcr = serial_in(up, UART_MCR); in serial_omap_set_mctrl()
659 up->mcr = old_mcr | mcr; in serial_omap_set_mctrl()
660 serial_out(up, UART_MCR, up->mcr); in serial_omap_set_mctrl()
663 lcr = serial_in(up, UART_LCR); in serial_omap_set_mctrl()
664 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_mctrl()
665 if ((mctrl & TIOCM_RTS) && (port->status & UPSTAT_AUTORTS)) in serial_omap_set_mctrl()
666 up->efr |= UART_EFR_RTS; in serial_omap_set_mctrl()
668 up->efr &= ~UART_EFR_RTS; in serial_omap_set_mctrl()
669 serial_out(up, UART_EFR, up->efr); in serial_omap_set_mctrl()
670 serial_out(up, UART_LCR, lcr); in serial_omap_set_mctrl()
675 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_break_ctl() local
678 dev_dbg(up->port.dev, "serial_omap_break_ctl+%d\n", up->port.line); in serial_omap_break_ctl()
679 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_break_ctl()
680 if (break_state == -1) in serial_omap_break_ctl()
681 up->lcr |= UART_LCR_SBC; in serial_omap_break_ctl()
683 up->lcr &= ~UART_LCR_SBC; in serial_omap_break_ctl()
684 serial_out(up, UART_LCR, up->lcr); in serial_omap_break_ctl()
685 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_break_ctl()
690 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_startup() local
697 retval = request_irq(up->port.irq, serial_omap_irq, up->port.irqflags, in serial_omap_startup()
698 up->name, up); in serial_omap_startup()
702 /* Optional wake-up IRQ */ in serial_omap_startup()
703 if (up->wakeirq) { in serial_omap_startup()
704 retval = dev_pm_set_dedicated_wake_irq(up->dev, up->wakeirq); in serial_omap_startup()
706 free_irq(up->port.irq, up); in serial_omap_startup()
711 dev_dbg(up->port.dev, "serial_omap_startup+%d\n", up->port.line); in serial_omap_startup()
713 pm_runtime_get_sync(up->dev); in serial_omap_startup()
718 serial_omap_clear_fifos(up); in serial_omap_startup()
723 (void) serial_in(up, UART_LSR); in serial_omap_startup()
724 if (serial_in(up, UART_LSR) & UART_LSR_DR) in serial_omap_startup()
725 (void) serial_in(up, UART_RX); in serial_omap_startup()
726 (void) serial_in(up, UART_IIR); in serial_omap_startup()
727 (void) serial_in(up, UART_MSR); in serial_omap_startup()
732 serial_out(up, UART_LCR, UART_LCR_WLEN8); in serial_omap_startup()
733 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_startup()
737 up->port.mctrl |= TIOCM_OUT2; in serial_omap_startup()
738 serial_omap_set_mctrl(&up->port, up->port.mctrl); in serial_omap_startup()
739 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_startup()
741 up->msr_saved_flags = 0; in serial_omap_startup()
747 up->ier = UART_IER_RLSI | UART_IER_RDI; in serial_omap_startup()
748 serial_out(up, UART_IER, up->ier); in serial_omap_startup()
750 /* Enable module level wake up */ in serial_omap_startup()
751 up->wer = OMAP_UART_WER_MOD_WKUP; in serial_omap_startup()
752 if (up->features & OMAP_UART_WER_HAS_TX_WAKEUP) in serial_omap_startup()
753 up->wer |= OMAP_UART_TX_WAKEUP_EN; in serial_omap_startup()
755 serial_out(up, UART_OMAP_WER, up->wer); in serial_omap_startup()
757 up->port_activity = jiffies; in serial_omap_startup()
763 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_shutdown() local
766 dev_dbg(up->port.dev, "serial_omap_shutdown+%d\n", up->port.line); in serial_omap_shutdown()
771 up->ier = 0; in serial_omap_shutdown()
772 serial_out(up, UART_IER, 0); in serial_omap_shutdown()
774 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_shutdown()
775 up->port.mctrl &= ~TIOCM_OUT2; in serial_omap_shutdown()
776 serial_omap_set_mctrl(&up->port, up->port.mctrl); in serial_omap_shutdown()
777 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_shutdown()
782 serial_out(up, UART_LCR, serial_in(up, UART_LCR) & ~UART_LCR_SBC); in serial_omap_shutdown()
783 serial_omap_clear_fifos(up); in serial_omap_shutdown()
788 if (serial_in(up, UART_LSR) & UART_LSR_DR) in serial_omap_shutdown()
789 (void) serial_in(up, UART_RX); in serial_omap_shutdown()
791 pm_runtime_put_sync(up->dev); in serial_omap_shutdown()
792 free_irq(up->port.irq, up); in serial_omap_shutdown()
793 dev_pm_clear_wake_irq(up->dev); in serial_omap_shutdown()
798 struct uart_omap_port *up = container_of(work, struct uart_omap_port, in serial_omap_uart_qos_work() local
801 cpu_latency_qos_update_request(&up->pm_qos_request, up->latency); in serial_omap_uart_qos_work()
808 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_set_termios() local
813 cval = UART_LCR_WLEN(tty_get_char_size(termios->c_cflag)); in serial_omap_set_termios()
815 if (termios->c_cflag & CSTOPB) in serial_omap_set_termios()
817 if (termios->c_cflag & PARENB) in serial_omap_set_termios()
819 if (!(termios->c_cflag & PARODD)) in serial_omap_set_termios()
821 if (termios->c_cflag & CMSPAR) in serial_omap_set_termios()
828 baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/13); in serial_omap_set_termios()
832 up->calc_latency = (USEC_PER_SEC * up->port.fifosize) / (baud / 8); in serial_omap_set_termios()
833 up->latency = up->calc_latency; in serial_omap_set_termios()
834 schedule_work(&up->qos_work); in serial_omap_set_termios()
836 up->dll = quot & 0xff; in serial_omap_set_termios()
837 up->dlh = quot >> 8; in serial_omap_set_termios()
838 up->mdr1 = UART_OMAP_MDR1_DISABLE; in serial_omap_set_termios()
840 up->fcr = UART_FCR_R_TRIG_01 | UART_FCR_T_TRIG_01 | in serial_omap_set_termios()
847 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_set_termios()
850 * Update the per-port timeout. in serial_omap_set_termios()
852 uart_update_timeout(port, termios->c_cflag, baud); in serial_omap_set_termios()
854 up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; in serial_omap_set_termios()
855 if (termios->c_iflag & INPCK) in serial_omap_set_termios()
856 up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE; in serial_omap_set_termios()
857 if (termios->c_iflag & (BRKINT | PARMRK)) in serial_omap_set_termios()
858 up->port.read_status_mask |= UART_LSR_BI; in serial_omap_set_termios()
863 up->port.ignore_status_mask = 0; in serial_omap_set_termios()
864 if (termios->c_iflag & IGNPAR) in serial_omap_set_termios()
865 up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; in serial_omap_set_termios()
866 if (termios->c_iflag & IGNBRK) { in serial_omap_set_termios()
867 up->port.ignore_status_mask |= UART_LSR_BI; in serial_omap_set_termios()
872 if (termios->c_iflag & IGNPAR) in serial_omap_set_termios()
873 up->port.ignore_status_mask |= UART_LSR_OE; in serial_omap_set_termios()
879 if ((termios->c_cflag & CREAD) == 0) in serial_omap_set_termios()
880 up->port.ignore_status_mask |= UART_LSR_DR; in serial_omap_set_termios()
885 up->ier &= ~UART_IER_MSI; in serial_omap_set_termios()
886 if (UART_ENABLE_MS(&up->port, termios->c_cflag)) in serial_omap_set_termios()
887 up->ier |= UART_IER_MSI; in serial_omap_set_termios()
888 serial_out(up, UART_IER, up->ier); in serial_omap_set_termios()
889 serial_out(up, UART_LCR, cval); /* reset DLAB */ in serial_omap_set_termios()
890 up->lcr = cval; in serial_omap_set_termios()
891 up->scr = 0; in serial_omap_set_termios()
899 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
900 serial_out(up, UART_DLL, 0); in serial_omap_set_termios()
901 serial_out(up, UART_DLM, 0); in serial_omap_set_termios()
902 serial_out(up, UART_LCR, 0); in serial_omap_set_termios()
904 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
906 up->efr = serial_in(up, UART_EFR) & ~UART_EFR_ECB; in serial_omap_set_termios()
907 up->efr &= ~UART_EFR_SCD; in serial_omap_set_termios()
908 serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); in serial_omap_set_termios()
910 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
911 up->mcr = serial_in(up, UART_MCR) & ~UART_MCR_TCRTLR; in serial_omap_set_termios()
912 serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR); in serial_omap_set_termios()
915 up->scr |= OMAP_UART_SCR_RX_TRIG_GRANU1_MASK; in serial_omap_set_termios()
929 up->fcr &= ~OMAP_UART_FCR_RX_FIFO_TRIG_MASK; in serial_omap_set_termios()
930 up->fcr &= ~OMAP_UART_FCR_TX_FIFO_TRIG_MASK; in serial_omap_set_termios()
931 up->fcr |= UART_FCR6_R_TRIGGER_16 | UART_FCR6_T_TRIGGER_24 | in serial_omap_set_termios()
934 serial_out(up, UART_FCR, up->fcr); in serial_omap_set_termios()
935 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
937 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_set_termios()
940 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
941 serial_out(up, UART_MCR, up->mcr); in serial_omap_set_termios()
942 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
943 serial_out(up, UART_EFR, up->efr); in serial_omap_set_termios()
944 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
948 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_set_termios()
949 serial_omap_mdr1_errataset(up, up->mdr1); in serial_omap_set_termios()
951 serial_out(up, UART_OMAP_MDR1, up->mdr1); in serial_omap_set_termios()
953 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
954 serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); in serial_omap_set_termios()
956 serial_out(up, UART_LCR, 0); in serial_omap_set_termios()
957 serial_out(up, UART_IER, 0); in serial_omap_set_termios()
958 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
960 serial_out(up, UART_DLL, up->dll); /* LS of divisor */ in serial_omap_set_termios()
961 serial_out(up, UART_DLM, up->dlh); /* MS of divisor */ in serial_omap_set_termios()
963 serial_out(up, UART_LCR, 0); in serial_omap_set_termios()
964 serial_out(up, UART_IER, up->ier); in serial_omap_set_termios()
965 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
967 serial_out(up, UART_EFR, up->efr); in serial_omap_set_termios()
968 serial_out(up, UART_LCR, cval); in serial_omap_set_termios()
971 up->mdr1 = UART_OMAP_MDR1_13X_MODE; in serial_omap_set_termios()
973 up->mdr1 = UART_OMAP_MDR1_16X_MODE; in serial_omap_set_termios()
975 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_set_termios()
976 serial_omap_mdr1_errataset(up, up->mdr1); in serial_omap_set_termios()
978 serial_out(up, UART_OMAP_MDR1, up->mdr1); in serial_omap_set_termios()
981 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
984 serial_out(up, UART_XON1, termios->c_cc[VSTART]); in serial_omap_set_termios()
985 serial_out(up, UART_XOFF1, termios->c_cc[VSTOP]); in serial_omap_set_termios()
988 serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); in serial_omap_set_termios()
989 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
990 serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR); in serial_omap_set_termios()
992 serial_out(up, UART_TI752_TCR, OMAP_UART_TCR_TRIG); in serial_omap_set_termios()
994 up->port.status &= ~(UPSTAT_AUTOCTS | UPSTAT_AUTORTS | UPSTAT_AUTOXOFF); in serial_omap_set_termios()
996 if (termios->c_cflag & CRTSCTS && up->port.flags & UPF_HARD_FLOW) { in serial_omap_set_termios()
998 up->port.status |= UPSTAT_AUTOCTS | UPSTAT_AUTORTS; in serial_omap_set_termios()
999 up->efr |= UART_EFR_CTS; in serial_omap_set_termios()
1002 up->efr &= ~(UART_EFR_CTS | UART_EFR_RTS); in serial_omap_set_termios()
1005 if (up->port.flags & UPF_SOFT_FLOW) { in serial_omap_set_termios()
1007 up->efr &= OMAP_UART_SW_CLR; in serial_omap_set_termios()
1014 if (termios->c_iflag & IXON) in serial_omap_set_termios()
1015 up->efr |= OMAP_UART_SW_RX; in serial_omap_set_termios()
1022 if (termios->c_iflag & IXOFF) { in serial_omap_set_termios()
1023 up->port.status |= UPSTAT_AUTOXOFF; in serial_omap_set_termios()
1024 up->efr |= OMAP_UART_SW_TX; in serial_omap_set_termios()
1033 if (termios->c_iflag & IXANY) in serial_omap_set_termios()
1034 up->mcr |= UART_MCR_XONANY; in serial_omap_set_termios()
1036 up->mcr &= ~UART_MCR_XONANY; in serial_omap_set_termios()
1038 serial_out(up, UART_MCR, up->mcr); in serial_omap_set_termios()
1039 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1040 serial_out(up, UART_EFR, up->efr); in serial_omap_set_termios()
1041 serial_out(up, UART_LCR, up->lcr); in serial_omap_set_termios()
1043 serial_omap_set_mctrl(&up->port, up->port.mctrl); in serial_omap_set_termios()
1045 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_set_termios()
1046 dev_dbg(up->port.dev, "serial_omap_set_termios+%d\n", up->port.line); in serial_omap_set_termios()
1053 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_pm() local
1056 dev_dbg(up->port.dev, "serial_omap_pm+%d\n", up->port.line); in serial_omap_pm()
1058 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_pm()
1059 efr = serial_in(up, UART_EFR); in serial_omap_pm()
1060 serial_out(up, UART_EFR, efr | UART_EFR_ECB); in serial_omap_pm()
1061 serial_out(up, UART_LCR, 0); in serial_omap_pm()
1063 serial_out(up, UART_IER, (state != 0) ? UART_IERX_SLEEP : 0); in serial_omap_pm()
1064 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_pm()
1065 serial_out(up, UART_EFR, efr); in serial_omap_pm()
1066 serial_out(up, UART_LCR, 0); in serial_omap_pm()
1071 dev_dbg(port->dev, "serial_omap_release_port+\n"); in serial_omap_release_port()
1076 dev_dbg(port->dev, "serial_omap_request_port+\n"); in serial_omap_request_port()
1082 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_config_port() local
1084 dev_dbg(up->port.dev, "serial_omap_config_port+%d\n", in serial_omap_config_port()
1085 up->port.line); in serial_omap_config_port()
1086 up->port.type = PORT_OMAP; in serial_omap_config_port()
1087 up->port.flags |= UPF_SOFT_FLOW | UPF_HARD_FLOW; in serial_omap_config_port()
1094 dev_dbg(port->dev, "serial_omap_verify_port+\n"); in serial_omap_verify_port()
1095 return -EINVAL; in serial_omap_verify_port()
1101 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_type() local
1103 dev_dbg(up->port.dev, "serial_omap_type+%d\n", up->port.line); in serial_omap_type()
1104 return up->name; in serial_omap_type()
1107 static void __maybe_unused wait_for_xmitr(struct uart_omap_port *up) in wait_for_xmitr() argument
1111 /* Wait up to 10ms for the character(s) to be sent. */ in wait_for_xmitr()
1113 status = serial_in(up, UART_LSR); in wait_for_xmitr()
1116 up->lsr_break_flag = UART_LSR_BI; in wait_for_xmitr()
1118 if (--tmout == 0) in wait_for_xmitr()
1123 /* Wait up to 1s for flow control if necessary */ in wait_for_xmitr()
1124 if (up->port.flags & UPF_CONS_FLOW) { in wait_for_xmitr()
1126 for (tmout = 1000000; tmout; tmout--) { in wait_for_xmitr()
1127 unsigned int msr = serial_in(up, UART_MSR); in wait_for_xmitr()
1129 up->msr_saved_flags |= msr & MSR_SAVE_FLAGS; in wait_for_xmitr()
1142 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_poll_put_char() local
1144 wait_for_xmitr(up); in serial_omap_poll_put_char()
1145 serial_out(up, UART_TX, ch); in serial_omap_poll_put_char()
1150 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_poll_get_char() local
1153 status = serial_in(up, UART_LSR); in serial_omap_poll_get_char()
1159 status = serial_in(up, UART_RX); in serial_omap_poll_get_char()
1172 offset <<= port->regshift; in omap_serial_early_in()
1173 return readw(port->membase + offset); in omap_serial_early_in()
1179 offset <<= port->regshift; in omap_serial_early_out()
1180 writew(value, port->membase + offset); in omap_serial_early_out()
1199 struct earlycon_device *device = console->data; in early_omap_serial_write()
1200 struct uart_port *port = &device->port; in early_omap_serial_write()
1208 struct uart_port *port = &device->port; in early_omap_serial_setup()
1210 if (!(device->port.membase || device->port.iobase)) in early_omap_serial_setup()
1211 return -ENODEV; in early_omap_serial_setup()
1213 port->regshift = 2; in early_omap_serial_setup()
1214 device->con->write = early_omap_serial_write; in early_omap_serial_setup()
1218 OF_EARLYCON_DECLARE(omapserial, "ti,omap2-uart", early_omap_serial_setup);
1219 OF_EARLYCON_DECLARE(omapserial, "ti,omap3-uart", early_omap_serial_setup);
1220 OF_EARLYCON_DECLARE(omapserial, "ti,omap4-uart", early_omap_serial_setup);
1229 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_console_putchar() local
1231 wait_for_xmitr(up); in serial_omap_console_putchar()
1232 serial_out(up, UART_TX, ch); in serial_omap_console_putchar()
1239 struct uart_omap_port *up = serial_omap_console_ports[co->index]; in serial_omap_console_write() local
1245 if (up->port.sysrq) in serial_omap_console_write()
1248 locked = spin_trylock(&up->port.lock); in serial_omap_console_write()
1250 spin_lock(&up->port.lock); in serial_omap_console_write()
1255 ier = serial_in(up, UART_IER); in serial_omap_console_write()
1256 serial_out(up, UART_IER, 0); in serial_omap_console_write()
1258 uart_console_write(&up->port, s, count, serial_omap_console_putchar); in serial_omap_console_write()
1264 wait_for_xmitr(up); in serial_omap_console_write()
1265 serial_out(up, UART_IER, ier); in serial_omap_console_write()
1273 if (up->msr_saved_flags) in serial_omap_console_write()
1274 check_modem_status(up); in serial_omap_console_write()
1277 spin_unlock(&up->port.lock); in serial_omap_console_write()
1284 struct uart_omap_port *up; in serial_omap_console_setup() local
1290 if (serial_omap_console_ports[co->index] == NULL) in serial_omap_console_setup()
1291 return -ENODEV; in serial_omap_console_setup()
1292 up = serial_omap_console_ports[co->index]; in serial_omap_console_setup()
1297 return uart_set_options(&up->port, co, baud, parity, bits, flow); in serial_omap_console_setup()
1306 .index = -1,
1310 static void serial_omap_add_console_port(struct uart_omap_port *up) in serial_omap_add_console_port() argument
1312 serial_omap_console_ports[up->port.line] = up; in serial_omap_add_console_port()
1321 static inline void serial_omap_add_console_port(struct uart_omap_port *up) in serial_omap_add_console_port() argument
1331 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_config_rs485() local
1336 mode = up->ier; in serial_omap_config_rs485()
1337 up->ier = 0; in serial_omap_config_rs485()
1338 serial_out(up, UART_IER, 0); in serial_omap_config_rs485()
1341 val = (rs485->flags & SER_RS485_ENABLED) ? in serial_omap_config_rs485()
1343 val = (rs485->flags & val) ? 1 : 0; in serial_omap_config_rs485()
1344 gpiod_set_value(up->rts_gpiod, val); in serial_omap_config_rs485()
1347 up->ier = mode; in serial_omap_config_rs485()
1348 serial_out(up, UART_IER, up->ier); in serial_omap_config_rs485()
1350 /* If RS-485 is disabled, make sure the THR interrupt is fired when in serial_omap_config_rs485()
1353 if (!(rs485->flags & SER_RS485_ENABLED) && in serial_omap_config_rs485()
1354 (up->scr & OMAP_UART_SCR_TX_EMPTY)) { in serial_omap_config_rs485()
1355 up->scr &= ~OMAP_UART_SCR_TX_EMPTY; in serial_omap_config_rs485()
1356 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_config_rs485()
1390 .driver_name = "OMAP-SERIAL",
1399 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_prepare() local
1401 up->is_suspending = true; in serial_omap_prepare()
1408 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_complete() local
1410 up->is_suspending = false; in serial_omap_complete()
1415 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_suspend() local
1417 uart_suspend_port(&serial_omap_reg, &up->port); in serial_omap_suspend()
1418 flush_work(&up->qos_work); in serial_omap_suspend()
1421 serial_omap_enable_wakeup(up, true); in serial_omap_suspend()
1423 serial_omap_enable_wakeup(up, false); in serial_omap_suspend()
1430 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_resume() local
1433 serial_omap_enable_wakeup(up, false); in serial_omap_resume()
1435 uart_resume_port(&serial_omap_reg, &up->port); in serial_omap_resume()
1444 static void omap_serial_fill_features_erratas(struct uart_omap_port *up) in omap_serial_fill_features_erratas() argument
1449 mvr = readl(up->port.membase + (UART_OMAP_MVER << up->port.regshift)); in omap_serial_fill_features_erratas()
1469 dev_warn(up->dev, in omap_serial_fill_features_erratas()
1471 up->name); in omap_serial_fill_features_erratas()
1482 up->errata |= (UART_ERRATA_i202_MDR1_ACCESS | in omap_serial_fill_features_erratas()
1486 up->errata |= (UART_ERRATA_i202_MDR1_ACCESS | in omap_serial_fill_features_erratas()
1488 up->features |= OMAP_UART_WER_HAS_TX_WAKEUP; in omap_serial_fill_features_erratas()
1491 up->errata |= UART_ERRATA_i202_MDR1_ACCESS; in omap_serial_fill_features_erratas()
1492 up->features |= OMAP_UART_WER_HAS_TX_WAKEUP; in omap_serial_fill_features_erratas()
1507 of_property_read_u32(dev->of_node, "clock-frequency", in of_get_uart_port_info()
1508 &omap_up_info->uartclk); in of_get_uart_port_info()
1510 omap_up_info->flags = UPF_BOOT_AUTOCONF; in of_get_uart_port_info()
1515 static int serial_omap_probe_rs485(struct uart_omap_port *up, in serial_omap_probe_rs485() argument
1518 struct serial_rs485 *rs485conf = &up->port.rs485; in serial_omap_probe_rs485()
1519 struct device_node *np = dev->of_node; in serial_omap_probe_rs485()
1523 rs485conf->flags = 0; in serial_omap_probe_rs485()
1524 up->rts_gpiod = NULL; in serial_omap_probe_rs485()
1529 ret = uart_get_rs485_mode(&up->port); in serial_omap_probe_rs485()
1533 if (of_property_read_bool(np, "rs485-rts-active-high")) { in serial_omap_probe_rs485()
1534 rs485conf->flags |= SER_RS485_RTS_ON_SEND; in serial_omap_probe_rs485()
1535 rs485conf->flags &= ~SER_RS485_RTS_AFTER_SEND; in serial_omap_probe_rs485()
1537 rs485conf->flags &= ~SER_RS485_RTS_ON_SEND; in serial_omap_probe_rs485()
1538 rs485conf->flags |= SER_RS485_RTS_AFTER_SEND; in serial_omap_probe_rs485()
1542 gflags = rs485conf->flags & SER_RS485_RTS_AFTER_SEND ? in serial_omap_probe_rs485()
1544 up->rts_gpiod = devm_gpiod_get_optional(dev, "rts", gflags); in serial_omap_probe_rs485()
1545 if (IS_ERR(up->rts_gpiod)) { in serial_omap_probe_rs485()
1546 ret = PTR_ERR(up->rts_gpiod); in serial_omap_probe_rs485()
1547 if (ret == -EPROBE_DEFER) in serial_omap_probe_rs485()
1550 up->rts_gpiod = NULL; in serial_omap_probe_rs485()
1551 up->port.rs485_supported = (const struct serial_rs485) { }; in serial_omap_probe_rs485()
1552 if (rs485conf->flags & SER_RS485_ENABLED) { in serial_omap_probe_rs485()
1553 dev_err(dev, "disabling RS-485 (rts-gpio missing in device tree)\n"); in serial_omap_probe_rs485()
1557 gpiod_set_consumer_name(up->rts_gpiod, "omap-serial"); in serial_omap_probe_rs485()
1572 struct omap_uart_port_info *omap_up_info = dev_get_platdata(&pdev->dev); in serial_omap_probe()
1573 struct uart_omap_port *up; in serial_omap_probe() local
1581 if (pdev->dev.of_node) { in serial_omap_probe()
1582 uartirq = irq_of_parse_and_map(pdev->dev.of_node, 0); in serial_omap_probe()
1584 return -EPROBE_DEFER; in serial_omap_probe()
1585 wakeirq = irq_of_parse_and_map(pdev->dev.of_node, 1); in serial_omap_probe()
1586 omap_up_info = of_get_uart_port_info(&pdev->dev); in serial_omap_probe()
1587 pdev->dev.platform_data = omap_up_info; in serial_omap_probe()
1591 return -EPROBE_DEFER; in serial_omap_probe()
1594 up = devm_kzalloc(&pdev->dev, sizeof(*up), GFP_KERNEL); in serial_omap_probe()
1595 if (!up) in serial_omap_probe()
1596 return -ENOMEM; in serial_omap_probe()
1599 base = devm_ioremap_resource(&pdev->dev, mem); in serial_omap_probe()
1603 up->dev = &pdev->dev; in serial_omap_probe()
1604 up->port.dev = &pdev->dev; in serial_omap_probe()
1605 up->port.type = PORT_OMAP; in serial_omap_probe()
1606 up->port.iotype = UPIO_MEM; in serial_omap_probe()
1607 up->port.irq = uartirq; in serial_omap_probe()
1608 up->port.regshift = 2; in serial_omap_probe()
1609 up->port.fifosize = 64; in serial_omap_probe()
1610 up->port.ops = &serial_omap_pops; in serial_omap_probe()
1611 up->port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_OMAP_CONSOLE); in serial_omap_probe()
1613 if (pdev->dev.of_node) in serial_omap_probe()
1614 ret = of_alias_get_id(pdev->dev.of_node, "serial"); in serial_omap_probe()
1616 ret = pdev->id; in serial_omap_probe()
1619 dev_err(&pdev->dev, "failed to get alias/pdev id, errno %d\n", in serial_omap_probe()
1623 up->port.line = ret; in serial_omap_probe()
1625 if (up->port.line >= OMAP_MAX_HSUART_PORTS) { in serial_omap_probe()
1626 dev_err(&pdev->dev, "uart ID %d > MAX %d.\n", up->port.line, in serial_omap_probe()
1628 ret = -ENXIO; in serial_omap_probe()
1632 up->wakeirq = wakeirq; in serial_omap_probe()
1633 if (!up->wakeirq) in serial_omap_probe()
1634 dev_info(up->port.dev, "no wakeirq for uart%d\n", in serial_omap_probe()
1635 up->port.line); in serial_omap_probe()
1637 ret = serial_omap_probe_rs485(up, &pdev->dev); in serial_omap_probe()
1641 sprintf(up->name, "OMAP UART%d", up->port.line); in serial_omap_probe()
1642 up->port.mapbase = mem->start; in serial_omap_probe()
1643 up->port.membase = base; in serial_omap_probe()
1644 up->port.flags = omap_up_info->flags; in serial_omap_probe()
1645 up->port.uartclk = omap_up_info->uartclk; in serial_omap_probe()
1646 up->port.rs485_config = serial_omap_config_rs485; in serial_omap_probe()
1647 up->port.rs485_supported = serial_omap_rs485_supported; in serial_omap_probe()
1648 if (!up->port.uartclk) { in serial_omap_probe()
1649 up->port.uartclk = DEFAULT_CLK_SPEED; in serial_omap_probe()
1650 dev_warn(&pdev->dev, in serial_omap_probe()
1655 up->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE; in serial_omap_probe()
1656 up->calc_latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE; in serial_omap_probe()
1657 cpu_latency_qos_add_request(&up->pm_qos_request, up->latency); in serial_omap_probe()
1658 INIT_WORK(&up->qos_work, serial_omap_uart_qos_work); in serial_omap_probe()
1660 platform_set_drvdata(pdev, up); in serial_omap_probe()
1661 if (omap_up_info->autosuspend_timeout == 0) in serial_omap_probe()
1662 omap_up_info->autosuspend_timeout = -1; in serial_omap_probe()
1664 device_init_wakeup(up->dev, true); in serial_omap_probe()
1666 pm_runtime_enable(&pdev->dev); in serial_omap_probe()
1668 pm_runtime_get_sync(&pdev->dev); in serial_omap_probe()
1670 omap_serial_fill_features_erratas(up); in serial_omap_probe()
1672 ui[up->port.line] = up; in serial_omap_probe()
1673 serial_omap_add_console_port(up); in serial_omap_probe()
1675 ret = uart_add_one_port(&serial_omap_reg, &up->port); in serial_omap_probe()
1682 pm_runtime_put_sync(&pdev->dev); in serial_omap_probe()
1683 pm_runtime_disable(&pdev->dev); in serial_omap_probe()
1684 cpu_latency_qos_remove_request(&up->pm_qos_request); in serial_omap_probe()
1685 device_init_wakeup(up->dev, false); in serial_omap_probe()
1693 struct uart_omap_port *up = platform_get_drvdata(dev); in serial_omap_remove() local
1695 pm_runtime_get_sync(up->dev); in serial_omap_remove()
1697 uart_remove_one_port(&serial_omap_reg, &up->port); in serial_omap_remove()
1699 pm_runtime_put_sync(up->dev); in serial_omap_remove()
1700 pm_runtime_disable(up->dev); in serial_omap_remove()
1701 cpu_latency_qos_remove_request(&up->pm_qos_request); in serial_omap_remove()
1702 device_init_wakeup(&dev->dev, false); in serial_omap_remove()
1716 static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1) in serial_omap_mdr1_errataset() argument
1720 serial_out(up, UART_OMAP_MDR1, mdr1); in serial_omap_mdr1_errataset()
1722 serial_out(up, UART_FCR, up->fcr | UART_FCR_CLEAR_XMIT | in serial_omap_mdr1_errataset()
1728 while (UART_LSR_THRE != (serial_in(up, UART_LSR) & in serial_omap_mdr1_errataset()
1730 timeout--; in serial_omap_mdr1_errataset()
1733 dev_crit(up->dev, "Errata i202: timedout %x\n", in serial_omap_mdr1_errataset()
1734 serial_in(up, UART_LSR)); in serial_omap_mdr1_errataset()
1742 static void serial_omap_restore_context(struct uart_omap_port *up) in serial_omap_restore_context() argument
1744 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_restore_context()
1745 serial_omap_mdr1_errataset(up, UART_OMAP_MDR1_DISABLE); in serial_omap_restore_context()
1747 serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE); in serial_omap_restore_context()
1749 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ in serial_omap_restore_context()
1750 serial_out(up, UART_EFR, UART_EFR_ECB); in serial_omap_restore_context()
1751 serial_out(up, UART_LCR, 0x0); /* Operational mode */ in serial_omap_restore_context()
1752 serial_out(up, UART_IER, 0x0); in serial_omap_restore_context()
1753 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ in serial_omap_restore_context()
1754 serial_out(up, UART_DLL, up->dll); in serial_omap_restore_context()
1755 serial_out(up, UART_DLM, up->dlh); in serial_omap_restore_context()
1756 serial_out(up, UART_LCR, 0x0); /* Operational mode */ in serial_omap_restore_context()
1757 serial_out(up, UART_IER, up->ier); in serial_omap_restore_context()
1758 serial_out(up, UART_FCR, up->fcr); in serial_omap_restore_context()
1759 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_restore_context()
1760 serial_out(up, UART_MCR, up->mcr); in serial_omap_restore_context()
1761 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ in serial_omap_restore_context()
1762 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_restore_context()
1763 serial_out(up, UART_EFR, up->efr); in serial_omap_restore_context()
1764 serial_out(up, UART_LCR, up->lcr); in serial_omap_restore_context()
1765 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_restore_context()
1766 serial_omap_mdr1_errataset(up, up->mdr1); in serial_omap_restore_context()
1768 serial_out(up, UART_OMAP_MDR1, up->mdr1); in serial_omap_restore_context()
1769 serial_out(up, UART_OMAP_WER, up->wer); in serial_omap_restore_context()
1774 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_runtime_suspend() local
1776 if (!up) in serial_omap_runtime_suspend()
1777 return -EINVAL; in serial_omap_runtime_suspend()
1785 if (up->is_suspending && !console_suspend_enabled && in serial_omap_runtime_suspend()
1786 uart_console(&up->port)) in serial_omap_runtime_suspend()
1787 return -EBUSY; in serial_omap_runtime_suspend()
1789 up->context_loss_cnt = serial_omap_get_context_loss_count(up); in serial_omap_runtime_suspend()
1791 serial_omap_enable_wakeup(up, true); in serial_omap_runtime_suspend()
1793 up->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE; in serial_omap_runtime_suspend()
1794 schedule_work(&up->qos_work); in serial_omap_runtime_suspend()
1801 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_runtime_resume() local
1803 int loss_cnt = serial_omap_get_context_loss_count(up); in serial_omap_runtime_resume()
1805 serial_omap_enable_wakeup(up, false); in serial_omap_runtime_resume()
1810 serial_omap_restore_context(up); in serial_omap_runtime_resume()
1811 } else if (up->context_loss_cnt != loss_cnt) { in serial_omap_runtime_resume()
1812 serial_omap_restore_context(up); in serial_omap_runtime_resume()
1814 up->latency = up->calc_latency; in serial_omap_runtime_resume()
1815 schedule_work(&up->qos_work); in serial_omap_runtime_resume()
1831 { .compatible = "ti,omap2-uart" },
1832 { .compatible = "ti,omap3-uart" },
1833 { .compatible = "ti,omap4-uart" },